Komento and Data Protection compliance

Hi,
We now need to have explicit permission to store email addresses on our website (data protection laws).

Is there any way to have a link to our privacy policy and a checkbox so that users have to confirm they have ready our privacy policy before they leave their email address when posting a comment?

If not, is there any way to turn off email address collection so that we do not store email addresses at all, unless they already have a Joomla account?

Thanks, Douglas